JPH10310383A - Building external facing working truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform external facing work of the outer surface of a veranda on an upper floor using a veranda on a lower floor. SOLUTION: A working truck is provided with a traveling truck A provided with wheels 15, an elevating base C fitted to the traveling truck A elevatingly by an elevating device B, and a workbench E movable along rails 40 provided at the elevating base C, by a moving cylinder 41. This working truck travels along the upper face 5 of a veranda 3, and the workbench E is vertically moved to enable a worker on the workbench E to perform external facing work of the outer surface 4 of the veranda 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work vehicle for exterior of a building used for exterior work of a low-, medium-, or high-rise building having a veranda such as an apartment house.

[0002]

2. Description of the Related Art Building exterior work such as tile application, spraying, painting, and sealing to joints on building exterior walls is indispensable for finishing and repairing the building exterior walls. And from the gondola hanging from the roof.

[0003]

The above-mentioned conventional building exterior work has the following problems. (1) In a building exterior work, ancillary works such as assembling, dismantling, and transporting a scaffold and a gondola occur as a pre- and post-process. However, this ancillary work is indispensable for ensuring the safety of building exterior work, but it is essentially irrelevant to the finish quality and repair quality of the building exterior, and due to the construction period, It is inefficient and uneconomical because it occupies half.

(2) The scaffolding members, gondola and its hanging members for the attachment work are not only large in number but also long and large, so that maintenance and inspection of each member and wide space are required. It is uneconomical because it requires a material storage area.

Accordingly, an object of the present invention is to provide a work truck for building exterior which can solve the above-mentioned problems.

[0006]

Means for Solving the Problems and Functions / Effects A first invention is a traveling vehicle A having wheels 15 and capable of traveling along the upper surface 5 of the veranda 3 of the building 1. A lifting platform C mounted to be able to move up and down by a lifting device B, and a work table E mounted on the lifting platform C so as to be reciprocally movable in a direction substantially perpendicular to the traveling direction of the traveling vehicle A by a moving device D. This is a building exterior work cart characterized by having the above configuration.

According to the first invention, the traveling vehicle A travels along the upper surface 5 of the veranda 3 and the work table E projects outward from the veranda 3 and moves up and down. The boarding worker can perform exterior work on the outer surface 4 of the veranda 3 on the upper floor.

[0008] Because of this, the veranda 3 on the lower floor
The exterior work of the verandah 3 on the upper floor can be safely exteriorized by utilizing the above.

[0009] Further, since the auxiliary work is the work of moving the work cart between the verandas with a crane or the like, the exterior work can be performed efficiently.

According to a second aspect of the invention, a guide roller 74 is provided near the other side in a direction substantially perpendicular to the traveling direction of the traveling vehicle A of the first aspect, the guide roller 74 being in contact with the lower surface 7 of the veranda 3 on the upper floor. This is a building exterior work cart to which the device F is attached.

According to the second aspect of the present invention, the guide cart 74 of the overturn prevention device F is brought into contact with the lower surface 7 of the veranda 3 on the upper floor, so that the work cart A moves to one side in a direction substantially perpendicular to the traveling direction. Falling can be prevented.

Thus, even if the worktable E projects more to one side than the traveling vehicle A, the traveling vehicle A does not fall over and is safe.

According to a third aspect of the present invention, in the first or second aspect, wheels 15 are respectively attached to the front, rear, left and right sides of the bogie main body 10, and one of the left and right wheels 15 is used as a drive wheel. Side guide roller 16 projecting beyond
This is a work cart for building exterior that is used as a traveling cart A

According to the third aspect of the present invention, even when the bogie main body 10 is inclined left and right one side due to the weight of the worktable E or the like, the wheels 15 as the driving wheels surely come into contact with the upper surface 5 of the veranda 3.
5 can be driven reliably. In addition, the traveling guide A can be correctly guided by bringing the side guide roller 16 into contact with the inner surface 6 of the veranda 3.

According to a fourth aspect, in the first, second, or third aspect, the bogie main body 1 of the traveling bogie A connected in an X-shape.
0 and the first link 20 and the second link 2 supported on the lift C
1 is extended and retracted by the lifting cylinder 23 to raise and lower the
And the first link 20 and the second link
When the link 21 is contracted and the elevator C is lowered, the first
Storage recess 14 in which link 20 and second link 21 are stored
And a rail 40 movably attached to the moving device D in a posture stored in the elevator C and a posture protruding from the elevator C, and slidably along the rail 40 attached to the worktable E. A building having a guide member 60 that can be formed and a moving cylinder 41 that is connected across a lifting table C and a work table E. The work table E has a handrail 31 foldably mounted around a floor plate 30. This is an exterior work cart.

According to the fourth invention, the first lifting device B
The heights of the lifting platform C can be made substantially the same as the height of the bogie main body 10 by housing the second links 20 and 21 and the lifting / lowering cylinder 23 in the storage recess 14 of the bogie main body 10.

The rail 40 and the moving cylinder 41 of the moving device D can be stored in the lift table C and positioned on the work table E.

The handrail 31 of the worktable E can be folded on the floor plate 30.

As a result, the height of the work cart can be reduced, and the moving device D and the work table E can be prevented from protruding from the cart body 10, so that the work cart can be made compact.

Therefore, the storage and transport of the work cart are easy, and the work of carrying the work cart into and out of the veranda from the upper and lower porches is facilitated.

According to a fifth aspect of the present invention, in the fourth aspect, a pair of columns 70, 70 rotatably mounted in a standing posture and a falling posture in front and rear sides of the bogie main body 10 of the traveling bogie A near the other side. A movable frame 71 that moves up and down along the pair of columns 70, 70, an elevating mechanism 72 that moves the movable frame 71 up and down, and a guide roller 74 attached to the movable frame 71 to form a fall prevention device F. This is a work vehicle for building exterior, in which a pair of columns 70 and 70 and a movable frame 71 can be stored in the storage recess 14 of the vehicle body 10.

According to the fifth aspect, the pair of columns 70, 7
Since the zero and the movable frame 71 can be stored in the storage recess 14 of the bogie main body 10, the fall prevention device F can be stored in the bogie main body 10, and the overall height of the work bogie can be reduced.

In this way, it is possible to prevent the overturn by the guide roller 74 of the overturn prevention device F during the exterior work, and to store the overturn prevention device F in the bogie main body 10 after the work is completed, thereby lowering the overall height, so that the upper and lower floors can be located. The loading and unloading of the work vehicle can be easily performed between the porches.

According to a sixth aspect of the present invention, the guide roller 74 according to the second or fifth aspect is vertically movable by a cylinder 73,
First means for expanding and contracting the cylinder 73, second means for detecting unevenness of the lower surface 7 of the veranda 3 on the upper floor,
This is a building exterior work cart provided with third means for operating the first means based on the unevenness detected by the second means, and the guide roller 74 is moved up and down according to the unevenness.

According to the sixth invention, the lower surface 7 of the veranda 3
The guide roller 74 moves up and down according to the unevenness even if the shape of the roller has irregularities due to the reinforcing beams or the like.

Thus, the traveling vehicle does not fall over due to the guide roller 74 colliding with the convex portion, and the traveling roller A can be reliably prevented from falling down since the guide roller 74 is always in contact with the lower surface 7 of the veranda 3.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a plurality of verandas 3 are provided on each floor of an outer surface 2 of a building 1, and the outer surface 4 and the outer surface 2 of the veranda 3 form the outer wall of the building 1. . The exterior work of the outer surface 2 can be performed by a person riding on the veranda 3 and the outer surface 4 of the veranda 3 on the first floor.
The exterior work can be performed from the ground. However, exterior work cannot be performed on the outer surface 4 of the veranda 3 on the second floor or higher from the ground.

The work vehicle for building exterior according to the present invention comprises a traveling vehicle A that travels in the front-rear direction, and an elevating device B
And a vertically movable direction (right and left direction) to the traveling direction of the traveling vehicle A with the moving device D mounted on the vertically movable table C.
And a workbench E movably reciprocated toward one side, and a fall prevention device F is mounted on a side opposite to the moving direction of the workbench A of the traveling vehicle A.

The exterior work using the above-mentioned building exterior work cart is performed as follows.

The work platform E is directed to the left and right one side while the traveling vehicle A is free to run along the upper surface 5 of the veranda 3 and the fall prevention device F prevents the traveling vehicle A from falling to the left and right one side. Move and protrude outward from the veranda 3 above,
In this state, the traveling vehicle A is traveled, and the work table E is moved up and down, and the worker a on the work table E performs exterior work on the outer surface 4 of the veranda 3 on the upper floor.

When the exterior work of the outer surface 4 of the veranda 3 is completed, the elevator C is lowered, the work E is positioned on the elevator C, and the fall prevention device F is folded to remove the building exterior work cart. Make it compact. In this state, the porch 3 moves to the adjacent veranda 3 and, as described above, the veranda 3 on the upper floor.
Exterior work 4 is carried out.

Because of this, the veranda 3 on the lower floor
The exterior work 4 of the veranda 3 on the upper floor can be safely exteriorized using the above. Attached work is only work to move between the verandas 3 by a crane or the like.

Therefore, it is possible to safely carry out the building exterior work, and to improve the exterior work efficiency by reducing the attached work.

Next, the specific structure of each part will be described with reference to FIGS. The traveling trolley A includes a trolley body 10. The bogie main body 10 has a pair of long first vertical plates 11, 11 opposed to each other in the left-right direction, a pair of short second vertical plates 12, 12 opposed to the front-rear direction, and a bottom plate 13. It has a storage recess 14 having a rectangular (rectangular) box shape and a rectangular (rectangular) planar shape. This storage recess 14
Is the first storage recess 14 near the left and right sides by the partition plate 18.
-1 and a second storage recess 14-2 near the other side.

Wheels 15 are located near the front, rear, left and right of the bottom plate 13.
Each of the first vertical plates 11 has a side guide roller 16 mounted rotatably about a vertical axis near a lower front and rear portion of the first vertical plate 11. It projects more outward than it contacts the inner surface 6 of the veranda 3.

The front and rear wheels 15 on the one first vertical plate 11 side (one on the left and right) are drive wheels that are driven to rotate by using a battery 17 as a power source. For example, a hydraulic pump (not shown) driven by the battery 17, a hydraulic motor (not shown) for rotating and driving the wheels 15, and an operation valve (not shown) for supplying discharge hydraulic oil of the hydraulic pump to the hydraulic motor ), And by switching the operation valve, the hydraulic motor rotates forward and reverse to travel forward and backward.

The front left and right wheels 15 are steered wheels. The wheels 15 are steered by an electric steering motor (not shown).

As described above, the traveling vehicle A is a self-propelled traveling vehicle that travels using the upper surface 5 and the inner surface 6 of the veranda 3 as guides, and also turns left and right.

Although one of the right and left front and rear wheels 15 is used as a drive wheel, one of the front and rear wheels 15 may be used as a drive wheel. Alternatively, a hand-held traveling vehicle A that travels by hand without using the front, rear, left, and right wheels 15 as drive wheels may be used.

If the flat shape of the veranda 3 is linear and steering is unnecessary, a linear traveling type traveling vehicle may be used without using the electric motor for steering. In addition, veranda 3
A rail is laid on the upper surface of the
In this case, the wheels can be freely steered by external force without using an electric motor for steering, and the side guide rollers 16 can be omitted.

The elevating device B includes a pair of first links 20.
And a pair of second links 21 are connected in an X-shape with pins 22,
The first and second links 20 and 21 are connected to a lifting cylinder 23.
It operates as a scissors link mechanism. Specifically, one end of the first link 20 is slidably supported in the front-rear direction along a rail 24 provided on the bogie main body 10,
One end of the link 21 is connected to the bogie main body 10 by a pin 25 so as to be vertically swingable.

The other end of the first link 20 is connected to the lift C by a pin 26 so as to be vertically swingable, and the other end of the second link 21 extends in the front-rear direction along the guide rail 27 of the lift C. It is supported swingably. When the elevating cylinder 23 is extended, the elevating platform C is raised, and when the elevating cylinder 23 is contracted, the elevating platform C is lowered.

The lift C is flat, and the plane of the lift C is slightly smaller than the plane of the bogie main body 10. Thus, when the elevator C is lowered, the first and second links 20, 21 and the elevator cylinder 23 are stored in the first storage recess 14-1 of the bogie main body 10, and the elevator C is moved. First storage recess 14 of bogie main body 10-
1 is compact in contact with the edge of the opening.

The work table E is provided with handrails 31 around a floor plate 30.
Is installed. The handrail 31 is formed by a pair of first handrails 32, 32 attached along the long side of the floor plate 30, and a pair of second handrails 33, 33 attached along the short side of the floor plate 30. The first handrail 32 is a vertical pipe 34 of the lower handrail 32a.
A vertical pipe 35 of the upper handrail 32b is slidably fitted to the upper handrail 32b and can be fixed by a lock 36 so as not to slide.

Each of the first handrails 32 and each of the second handrails 33 are rotatably mounted on a bracket 37 fixed to the floor plate 30 in a standing posture and a falling posture, and can be fixed by a lock 38 so as not to rotate. It is. The first handrail 32 and the second handrail 33 are connected and separated by a lock 39.

As described above, the first handrails 32 and the second handrails 33 are set in the upright posture to cover the periphery of the floor plate 30 and protect the workers from falling. At this time, the upper handrail 32b of the first handrail 32 is slid upward to move the first handrail 32.
Is the same height as the second handrail 33.

Each of the second handrails 33 is placed in the falling posture, and the upper handrail 32b is slid downward to make the first handrail 32 shorter than the width of the floor plate 30 so as to be in the falling posture, whereby the handrail 31 is folded and the floor plate 30 is folded. put on top. Thus, the worktable E is in a flat state.

The moving device D includes a pair of front and rear rails 40.
And a moving cylinder 41. The rail 40 includes a fixed rail 42 fixed to the lift C, and the fixed rail 42
A movable rail 44 is connected by a vertical pin 43 so as to be rotatable in a horizontal plane direction between a protruding posture and a storage posture.

A recess 45 is formed in the fixed rail 42, and a protrusion 46 and a long hole 47 are formed in the movable rail 44. The movable rail 44 projects by fitting the protrusion 46 into the recess 45. The lock pin 48 is fixed in the posture,
Is fitted into the lock hole 49 of the projection 46 to lock the movable rail 44. (See the back side of Fig. 7)

When the lock pin 48 is pulled out from the lock hole 49 and the movable rail 44 is moved forward as shown in the front side of FIG. 7 to pull out the projection 46 from the concave portion 45, the movable rail 44 is centered on the vertical pin 43. 7 can be rotated to the storage position as shown by a virtual line in FIG. The left and right vertical pins 43 are displaced from each other, and are stored parallel to the upper surface of the elevator C when the left and right movable rails 44 are in the storage posture.

The base end 41a of the moving cylinder 41 is connected to the elevating table C so as to be swingable in the horizontal plane direction on the vertical axis 50, and the movable part 41b is connected to the floor plate 30 of the work table E by the vertical axis 51.
It is connected with. The vertical axis 51 is the guide groove 5 of the floor plate 30.
It is supported slidably back and forth along 2.

A pair of front and rear guide members 60 are attached to the lower surface of the floor plate 30 near the front and rear. The guide member 60 is formed by a plurality of rollers 61 movable along the rail 40 and a pair of detaching stopper pieces 62 facing both sides of the rail 40.

As described above, the pair of movable rails 4
The workbench E reciprocates right and left along the rails 40 by extending and retracting the moving cylinder 41 with the protruding posture 4. In a state where the moving table 41 is contracted and the work table E is pulled above the elevating table C and moved, the plurality of rollers 61 are in contact with the fixed rail 42, and in this state, the movable rail 4
4 can be rotated to the storage position as described above. At this time, the roller 61 that has been in contact with the movable rail 44 slides on the movable rail 44.

As a result, the work table E and the moving device D can be stored on the elevating table C to be compact. Note that the movable rail 44 may be operated by a cylinder or the like.

The overturn prevention device F includes a pair of columns 70, 70 attached to the front and rear between the other first vertical plate 11 of the bogie main body 10 (the side opposite to the working floor projecting direction) and the partition plate 18, and the pair of columns 70, 70. A downward movable U-shaped movable frame 71 that moves up and down along the columns 70, 70, an elevating mechanism 72 that moves up and down the movable frame 71, and a plurality of cylinders 73 that are attached to the movable frame 71 at intervals in the front-rear direction. Each cylinder 7
3 and the movable frame 7
It comprises an auxiliary guide roller 75 attached before and after 1.

The elevating mechanism 72 includes a winch 77 provided with a handle 76 and attached to one of the columns 70, and a cable 78 wound around the winch 77. The cable 78 is connected to the other support 70 via a pulley 79 provided on one support 70 and a pulley 80 provided on the movable frame 71.

As described above, the winch 77 is rotated by the handle 76 to wind up the cable 78, so that the movable frame 71 is moved upward, and the winch 77 is rotated by the handle 76 in the opposite direction to rotate the cable 78. , The movable frame 71 moves downward.

The support column 70 is provided on the other first side of the bogie main body 10.
The vertical plate 11 and the partition plate 18 are supported by pins 81 so as to be vertically rotatable in a front-rear direction between a standing posture and a falling posture, and are held in a standing posture by lock pins 82.

A fixed portion 73a of the cylinder 73 is fixed to a fixed cylinder 83 fixed to the movable frame 71, and a movable cylinder 84 is connected to the movable portion 73b by a horizontal shaft 85.
The movable cylinder 84 is swingably fitted to the fixed cylinder 83,
A guide roller 74 is rotatably mounted on the horizontal shaft 85. Thereby, the guide roller 74 moves up and down by expanding and contracting the cylinder 73.

The auxiliary guide roller 75 is attached to a bracket 86 detachably attached to the movable frame 71 so as to face left and right one side. The auxiliary guide roller 75 contacts an auxiliary rail 87 attached to the lower surface 7 of the veranda 3.

As described above, the guide roller 74 is set to the lower position by contracting the cylinder 73, and the carriage body 1 is moved by moving the movable frame 71 downward as described above.
The second storage recess 14-2 is located closer to the left and right sides. In this state, the lock pin 82 is pulled out, and the column 70 is brought to the lying position, so that the column 70 is
4 are stored on the other side. At this time, bracket 8
Remove 6

Next, the procedure of the exterior work will be described. Workbench E
The handrail 31 is folded on the upper surface of the floor plate 30, the work table E is drawn on the lift table C and moved, and the rail 40 is stored on the lift table C. The elevator C is lowered by the elevator B to move the elevator B to the first storage recess 14-1 of the carriage body 10.
And the movable frame 71 of the fall prevention device F and the pair of columns 70 are stored in the second storage recess 14-2 of the bogie main body 10.

As a result, the work vehicle for building exterior is compact in the vertical and horizontal directions, which is convenient for storage and transportation.

In the above-mentioned state, the building exterior work cart is suspended and moved on the veranda 3 by the reach balancer 90 provided at the tip of the wire of the crane as shown in FIG.

The level of the upper surface 5 of the veranda 3 is checked, and if it is not horizontal, a horizontal plate is laid down or each wheel 15
The traveling cart A is horizontally set on the upper surface 5 of the veranda 3 as shown in FIG. Although the height adjustment of the wheel 15 has not been described in the above-described embodiment, an adjustment means may be provided so that the height can be adjusted.

As shown in FIG. 15, the veranda 3 on the upper floor
The auxiliary rail 87 is attached to the lower surface 7 of the device.

As shown in FIG. 16, the elevating device B is operated to raise the elevating platform C, and the moving device D is moved to the upper part 8 of the veranda 3.
(Above the handrail) slightly above.

As shown in FIG. 17, the movable rail 44 of the rail 40 of the moving device D projects outward from the outer surface 4 of the veranda 3 with the projecting posture.

As shown in FIG. 18, the working table E is moved along the rail 40 by extending the moving cylinder 41 of the moving device D.

As shown in FIG. 19, the support column 70 of the overturn prevention device F is in the upright posture, the movable frame 71 is moved upward, the cylinder 73 is extended and the guide roller 74 is operated to lower the lower surface of the veranda 3 on the upper floor. 7 and an auxiliary guide roller 7
5 is in contact with the auxiliary rail 87.

As shown in FIG. 20, the handrail 31 of the work table E
Assemble.

An operator rides on the work table E together with tiles, spraying material, coating agent, sealing material for joints, 3 tools, and the like. When the operator gets on the worktable E,
Lock the safety rope worn on the fixed member of the building.

Next, the work table E is moved to the optimum position as shown in FIG. 21 by extending the moving cylinder 41 of the moving device D, and thereafter the lifting device B is operated to raise the lifting table C to perform the work. The table E is set at the optimum height position as shown in FIG.

The worker performs the exterior work on the outer surface 4 of the veranda 3 on the upper floor while moving on the work table E. When performing exterior work in a place that cannot be reached from the workbench E, the vehicle travels by driving the wheels 15.

When the work is performed as described above, the work table E projects laterally to the left and right from the work A, so that the work A has a large overturning moment. 7, the auxiliary guide roller 75 is in contact with the auxiliary rail 87, so that the auxiliary guide roller 75 is further prevented from overturning and is safe.

Further, when the vehicle 15 travels by driving the wheels 15, the side guide rollers 16 are in contact with the inner surface 6 of the veranda 3. To travel. In addition, the guide roller 74 and the auxiliary guide roller 75 are connected to the lower surface 7 of the veranda 3,
Since it rotates along the auxiliary rail 87, the vehicle runs smoothly while preventing overturning.

Further, since the wheels 15 provided on the left and right sides of the bogie main body 10 are driven, the bogie main body 10 is
Since the truck 5 falls over as a fulcrum, even if the bogie main body 10 falls slightly, its wheels 15 are pressed against the upper surface 5 of the veranda 3 and the vehicle can travel reliably.

Next, the operation device will be described. As shown in FIG. 23, the electric motor 10 driven by the battery 17
0, the hydraulic pump 101 is driven.
The hydraulic pressure of the traveling hydraulic motor 10
3 and the wheels 15 are rotated by the traveling hydraulic motor 103.

The hydraulic oil discharged from the hydraulic pump 101 is supplied to the second operating valve 104, the third operating valve 105, and the fourth operating valve 106 by the lifting cylinder 23, the moving cylinder 41, and the cylinder 73.
Respectively. The first, second, third and fourth operation valves 102, 104, 105 and 106 are always in the neutral position a and the first solenoids 102a, 104a, 105a and 106
a when the power is supplied to the second solenoid 10a.
2b, 104b, 105b, 106b
This is position c.

Each of the solenoids has a controller 107.
The controller 107 receives an operation command from an operation box 108. Operation box 1
08 is a forward button 109, a reverse button 110, an up button 111,
A down button 112, a projection button 113, a retraction button 114, an up button 115, and a down button 116 are provided. By pressing these buttons, one of the solenoids is energized.

Since the operation box 108 is attached to the handrail 31 of the work table E and can be operated by the worker on the work table E, the above-mentioned operations are performed by the worker on the work table E. Can be.

The operation command from the operation box 108 to the controller 107 may be either a wireless type (remote control) or a wired type.

The cylinder 73 is provided with a stroke sensor 120 for detecting the length of expansion and contraction of the cylinder 73, and first and second for detecting the distance to the lower surface 7 of the veranda 3 on both sides of the cylinder 73 in the bogie traveling direction. Distance detector 121,
122 is provided. First and second distance detectors 121, 1
The first distance detector 121 detects the distance based on the time from when a sound wave or a laser is transmitted to when the reflected sound wave or the laser is received. The distance to the lower surface 7 is detected, and the second distance detector 122 detects the distance to the lower surface 7 of the veranda 3 behind the guide roller 74. As a result, the first and second distance detectors 121 and 122 serve as means for detecting unevenness on the lower surface 7 of the veranda 3.

That is, when the traveling vehicle A travels forward, the first distance detector 121 detects the distance to the lower surface 7 of the veranda 3 in front of the guide roller 74, and when the traveling vehicle A travels backward, the second distance detector 121 detects the distance. At 122, the distance to the lower surface 7 of the veranda 3 in front of the guide roller 74 is detected.

A pressure sensor 123 for detecting the pressure in the extension chamber 73a of the cylinder 73 is provided. The pressure sensor 123, the first and second distance detectors 121 and 122,
The value detected by the stroke sensor 120 is
07 respectively.

The controller 107 controls the operation as follows based on the input detection value. When a raising command is input from the raising button 115, the second solenoid 106b is energized to set the fourth operation valve 106 to the second position c. The pressurized oil is supplied to the extension chamber 73 a of the cylinder 73, the cylinder 73 is extended, and the guide roller 74 is pressed against the lower surface 7 of the veranda 3.

When the pressure in the extension chamber 73a of the cylinder 73 reaches the set pressure, the pressure sensor 123
, A trigger signal is input to the collet roller 107 and the stroke sensor 120 and the first and second distance detectors 12 at that time.
In addition to storing the detected values of 1, 122, the energization of the second solenoid 106b is stopped to set the fourth operation valve 106 to the neutral position a.

After that, the first solenoid 106a of the fourth operation valve 106 is energized for a predetermined time and the fourth solenoid 106a is turned on.
Is set to the first position b for a predetermined time, the cylinder 73 is slightly contracted and operated, and the guide roller 74 is moved downward by a slight stroke.

The reason why the guide roller 74 is moved downward is not to form a gap between the guide roller 74 and the lower surface 7 of the veranda 3. That is, when various tools (for example, heavy objects such as a welding machine) are mounted on the work table E, the moment on the work table E side centering on one of the left and right wheels 15 causes the overturn prevention device F centering on the other left and right wheel 15. In some cases, the traveling bogie A may be tilted. At this time, the fall prevention device F of the traveling vehicle A is lifted up,
The guide roller 74 is lifted by the downward stroke and abuts on the lower surface 7 of the veranda 3 to prevent falling.
That is, the above-described downward movement stroke may be several mm,
If it is too large, the inclination is large, giving a sense of danger to the operator.

If there is no downward movement stroke described above, the guide roller 74 is rotated by contacting the lower surface 7 of the veranda 3 with a strong force, so that running resistance is large and smooth running becomes difficult. .

In the state described above, the forward command is
7, when the truck A travels forward, the actual distance detected by the first distance detector 121 is compared with the stored distance. A strength beam protrudes from the lower surface 7 of the veranda 3,
When the actual distance is smaller than the stored distance due to the strength beam, the first solenoid 106a is energized to set the fourth operation valve 106 to the first position b and contract the cylinder 73 to operate. When the stroke of the cylinder 73 at this time becomes a difference between the actual distance and the stored distance, the first solenoid 1
06a to stop the fourth operation valve 106 at the neutral position a.
And the cylinder 73 is stopped.

As a result, the guide roller 74 moves downward by the protrusion of the strength beam.
Does not collide with the strength beam.

Immediately thereafter, the previously stored distance is updated to the actual distance.

Immediately before the guide roller 74 passes through the strength beam, the actual distance becomes larger than the stored distance. At this time, the cylinder 73 is extended by the difference between the actual distance and the stored distance in the same manner as described above to move the guide roller 74 upward.

Thus, the guide roller 74 can travel without falling down by contacting the lower surface 7 of the veranda 3.

Immediately thereafter, the actual distance is stored.

By repeating this operation, the guide roller 7
4 moves up and down in accordance with the unevenness (reinforcement beam) of the lower surface 7 of the veranda 3.

That is, the hydraulic pump 101 and the fourth operation valve 1
Reference numeral 06 forms first means for extending and retracting the cylinder 73, and controller 108 forms third means for operating the first means based on the irregularities.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a working state showing an embodiment of the present invention.

FIG. 2 is an overall schematic perspective view of a work cart.

FIG. 3 is an overall front view of the work cart.

FIG. 4 is an overall side view of the work cart.

FIG. 5 is a front view of a work table and a moving device.

FIG. 6 is a side view of the work table and the moving device.

FIG. 7 is a plan view of the moving device.

FIG. 8 is a side view of the moving device.

FIG. 9 is a front view of the overturn prevention device.

FIG. 10 is a side view of the overturn prevention device.

FIG. 11 is a plan view of the overturn prevention device.

FIG. 12 is a vertical sectional view of a cylinder mounting portion.

FIG. 13 is a work explanatory diagram.

FIG. 14 is a work explanatory diagram.

FIG. 15 is a work explanatory diagram.

FIG. 16 is a work explanatory diagram.

FIG. 17 is a work explanatory diagram.

FIG. 18 is a work explanatory diagram.

FIG. 19 is a work explanatory diagram.

FIG. 20 is a work explanatory diagram.

FIG. 21 is a work explanatory diagram.

FIG. 22 is a work explanatory diagram.

FIG. 23 is a hydraulic circuit diagram of the operating device.

[Explanation of symbols]

A: traveling trolley, B: elevating device, C: elevating device, D: moving device, E: working table, F: overturn prevention device, 3: veranda, 4
... Outer surface, 5 ... Top surface, 6 ... Inner surface, 7 ... Bottom surface, 10 ... Bogie body, 14 ... Storage recess, 15 ... Wheel, 16 ... Side guide roller, 20 ... First link, 21 ... Second link, 23 ... Lifting cylinder, 30 floor plate, 31 handrail, 40 rail, 41 moving cylinder, 42 fixed rail, 43
Vertical pin, 44: movable rail, 60: guide member, 61: roller, 70: support, 71: movable frame, 72: moving mechanism, 73: cylinder, 74: guide roller, 75: auxiliary guide roller, 87: auxiliary rail , 101: hydraulic pump, 106: fourth operation valve, 108: controller, 12
0: stroke sensor, 121: first distance detector, 12
2 ... second distance detector, 123 ... pressure sensor.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Tomoyuki Okamoto, Inventor 1-23-2, Kandasuda-cho, Chiyoda-ku, Tokyo Daiki Construction Co., Ltd. (72) Akira Yamaguchi 3-20-, Nakase, Kawasaki-ku, Kawasaki-shi, Kawasaki, Kanagawa Prefecture 1 Komatsu Engineering Co., Ltd. System Product Division

Claims (6)

[Claims] 1. A traveling vehicle A having wheels 15 and capable of traveling along the upper surface 5 of the veranda 3 of the building 1. An elevator C mounted on the traveling vehicle A so as to be able to ascend and descend by an elevator B. A work vehicle for building exteriors, comprising a work table E mounted on the lift C so as to be able to reciprocate to one side in a direction substantially perpendicular to the traveling direction of the traveling vehicle A by the moving device D. 2. An overturn prevention device F provided with a guide roller 74 abutting on the lower surface 7 of the veranda 3 on the upper floor is mounted near the other side in a direction substantially perpendicular to the traveling direction of the traveling vehicle A. Work truck for building exterior. 3. A traveling carriage having wheels 15 attached to the front, rear, left and right of the carriage body 10, one of the left and right wheels 15 as a drive wheel, and side guide rollers 16 protruding from the left and right one side surfaces attached to the carriage body 10. The work cart for building exterior according to claim 1 or 2, wherein the work cart is A. An elevating device B is formed by extending and contracting a first link 20 and a second link 21 which are connected in an X-shape and supported by a bogie main body 10 of a traveling bogie A and an elevating platform C by an elevating cylinder 23, The carriage main body 10 is provided with a storage recess 14 in which the first link 20 and the second link 21 are stored when the first link 20 and the second link 21 are contracted and the elevating platform C is lowered by operating the first link 20 and the second link 21. A rail 40 in which the device D is movably mounted to a position stored in the lift C and a position protruding from the lift C.
And a guide member 60 attached to the worktable E and slidable along the rails 40, and a moving cylinder 41 connected across the lift table C and the worktable E. The work cart for building exterior according to claim 1, wherein a handrail 31 is foldably attached to the periphery of the building. 5. A pair of pillars 70, 70 mounted rotatably in a standing posture and a falling posture on the left and right sides of the truck body 10 of the traveling truck A, and a pair of the pillars 7.
A movable frame 71 that moves up and down along the direction 0, 70, an elevating mechanism 72 that moves the movable frame 71 up and down, and a guide roller 74 attached to the movable frame 71 constitute an overturn prevention device F. The work cart for building exterior according to claim 4, wherein the movable frame (71) and the movable frame (71) can be stored in the storage recess (14) of the bogie body (10). 6. A first means for vertically moving the guide roller 74 with a cylinder 73 and extending and contracting the cylinder 73, and a second means for detecting irregularities on the lower surface 7 of the veranda 3 on the upper floor. Based on the irregularities detected by the second means, the first
Third means for operating the guide roller 7 is provided.
4. The method according to claim 2, wherein the step (4) moves up and down according to the unevenness.
The work cart for building exterior as described.